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oil or gas leak onto air filter of mower, do I just change filter or do I have a problem?

700 series Briggs and Stratton mower model # 917.374541 There appears to be a leak which is dripping off the filter area. Removed the filter and there isn't any clear leak from gas line appears dry. The filter is greasy along lower third and has dripped onto body while sitting between mowings.

Is this normal? Is there to much oil? Does not appear to be above the area on dip stick.

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Lawn Mowers
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Manage My Life
Okay, that's most likely going to be coming from the crankcase breather. That could fail just because it failed or it could be a blown head gasket causing excessive pressure in the crankcase. Remove the spark plug and see what the tip looks like. If the tip is gunked up with oil and sticky residue then it's very likely a head gasket giving the problem.
by Manage My Life
August 11th, 2011
Answered in 17 hours
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Manage My Life
I cleaned up the area ,put in a new filter and checked it after mowing and the mower had cooled down. There seemed to be a small seepage of oil on the housing for the filter.
by Manage My Life
August 11th, 2011
Answered in 17 hours
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Manage My Life
If the oil is not overfilled then we know that's not an issue. If may be the crankcase breather stuck and allowing oil to push into the air filter housing from there. Get a new air filter and then clean up the air filter housing then run the mower as usual and pay attention to any smoking. If all looks good, keep an eye on the air filter to see if it is starting to look oily again.

Let me know what you find.

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by Manage My Life
August 11th, 2011
Answered in 16 hours
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Manage My Life
I know how important it is to have a good working Mower in your home so that you can keep your grass maintained. While you are waiting for an expert answer, I did manage to find a few links that will provide you with some good information about what may be causing your problem.
by Manage My Life
August 10th, 2011
Answered in 15 minutes
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